I am an adult. Im not prudish. I watch porn. And whenever I see a sex scene in movies/tv shows/games I cringe.
They are usually most unnecessary to the story, and IMO a good movie makes you know it happened without showing it happening (without at least wiping the cock afterwards of course).
This made me hate Game of Thrones for example. I simply referred to it as midget porn. I even hated on it in front of my friends, they put it on to prove me wrong and lo and behold a midget is fucking a whore on screen.
Yeah, I know where to find porn and they even show genitalia there, thank you very much.